How to send a demand letter by certified mail
A demand letter does two jobs: it tells the other side what you want, and it starts a clock. The second job only works if you can later prove the letter arrived and when. That is why demand letters go certified even when nothing requires it, and why some statutes require it outright.
When the statute picks the method
- California Consumers Legal Remedies Act. Civil Code section 1782 requires written notice of the specific violations and a demand to correct them at least 30 days before suing for damages, sent by certified or registered mail, return receipt requested, to the place where the transaction occurred or the business's principal place of business in California. Send it any other way and the damages claim is exposed.
- Texas Deceptive Trade Practices Act. Business and Commerce Code section 17.505 requires written notice at least 60 days before filing suit, stating the complaint in reasonable detail and the amount of economic damages, mental anguish damages, and expenses claimed. No method is named, but a defendant who did not receive the notice can abate the case, so proof of receipt is the whole point.
Contracts do the same thing on a smaller scale. A notice clause that says "by certified mail to the address below" means exactly that, and a demand sent by email to the same person may not have been "given" at all. Read the clause, then match it.
Certified, or certified with a return receipt
Plain Certified Mail gives you a tracking number and a delivery scan. Adding a return receipt adds the signature of the person who took the piece, which is what the CLRA requires and what a judge wants to see when receipt is disputed. The electronic version arrives as a PDF with the signature and the delivery date, the same record as the green card without the return trip through the mail.
When the letter is refused or goes unclaimed, USPS records that in the tracking history and returns the piece. Keep the returned envelope unopened with the tracking record; together they show diligence, and many statutes and courts treat a refused certified letter as notice given. Sending a second copy by regular first-class mail the same day, and saying so in the letter, is a common belt-and-suspenders step.
Mailing it from your desk
With MatterSnail, upload the letter and its exhibits, add each party as a recipient, choose Certified Mail with an electronic return receipt, and submit. Each party gets their own tracking number and receipt, the mailing keeps the letter, the recipients, and the mailing date together as the record, and anything submitted before 12:00 p.m. Pacific is handed to USPS the same business day. The Certificate of Acceptance shows what went out and when, before the first scan.
Common questions
Does a demand letter have to be sent by certified mail?
Sometimes the statute decides. California Civil Code section 1782 requires the pre-suit notice under the Consumers Legal Remedies Act to be sent by certified or registered mail, return receipt requested, at least 30 days before suing for damages. Texas Business and Commerce Code section 17.505 requires written DTPA notice at least 60 days before suit without naming a method. Where nothing is required, certified mail is still the standard, because the letter only matters if you can prove it was received.
What does the return receipt actually prove?
That a piece addressed to the recipient was delivered on a specific date and signed for. Paired with a copy of the letter as sent, it establishes that the notice period started running and when. The electronic return receipt arrives as a PDF with the signature and delivery date, the same record as the green card without the return trip.
What if the recipient refuses the letter?
USPS records the refusal or the unclaimed piece in the tracking history and returns it. Keep the returned envelope unopened and the tracking record; together they show the attempt, and many statutes and courts treat a refused certified letter as notice given. Sending a second copy by regular first-class mail on the same day is a common belt-and-suspenders step.
Can I send the same demand to several parties at once?
Yes. With MatterSnail, upload the letter and its exhibits once, add each party as a recipient, choose Certified Mail with an electronic return receipt, and submit. Each party gets their own tracking number and receipt, and the mailing keeps the letter, the recipients, and the mailing date together as the record.
This guide is general information, not legal advice. See the Terms.
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